Recent Development in Electro-thermal Modeling and Simulation of OLEDs

Compared with traditional LEDs, OLEDs have a lower luminous efficiency, so the surface must be much larger to provide a light output equivalent to the total luminous flux. Brightness uniformity is a challenge for equipment engineers. High brightness will increase power consumption, causing Joule heat to self-heat. An increase in temperature may cause the performance of the OLED to decrease, and also cause the lateral brightness to become very uneven. Therefore quantitatively understand the thermal environment of multilayer composite devices under high current, and use this as a guide to mitigate the impact of heating by optimizing device and system design becomes very important. In this paper, recent progress regarding to the research on electro-thermal modeling of OLEDs is reviewed, with respect to the fundamental understanding of modeling of eletro-thermal processes. The current state of the simulation research is summarized and simulation methods is described.